<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>游戏大厅</title>
    <link rel="stylesheet" href="./css/common.css">
    <link rel="stylesheet" href="./css/game_hall.css">
</head>
<body>
    <div class="nav">网络五子棋对战游戏</div>
    <!-- 整个页面的容器元素 -->
    <div class="container">
        <!-- 这个 div 在 container 中是处于垂直水平居中这样的位置的 -->
        <div>
            <!-- 展示用户信息 -->
            <div id="screen"></div>
            <!-- 匹配按钮 -->
            <div id="match-button">开始匹配</div>
        </div>
    </div>

    <script src="./js/jquery.min.js"></script>
    <script>

        var ws_url = "ws://" + location.host + "/hall";
        var ws_hdl = null;

        //离开页面，关闭websocket连接
        window.onbeforeunload=function(){
            ws_hdl.close();
        }

        //给开始匹配按钮添加状态
        var button_flag="stop";
        //点击按钮的事件处理
        var be = document.getElementById("match-button");
        be.onclick=function()
        {
            if(button_flag=="stop")
            {
                //1.没有进行匹配状态下的点击按钮，发送对战匹配请求
                var req_json={
                    optype:"match_start"
                }
                ws_hdl.send(JSON.stringify(req_json));
            }
            else
            {
                //2.正在匹配，点击之后停止匹配
                var req_json={
                    optype:"match_stop"
                }
                ws_hdl.send(JSON.stringify(req_json));
            }
        }
        function get_user_info() {
            $.ajax({
                url: "/info",
                type: "get",
                success: function(res) {
                    var info_html = "<p>" + "用户：" + res.username + " 积分：" + res.score + 
                        "</br>" + "比赛场次：" + res.total_count + " 获胜场次：" + res.win_count + "</p>";
                    var screen_div = document.getElementById("screen");//获取screen div块
                    screen_div.innerHTML = info_html;//添加html信息

                    //获取用户信息成功后，建立websocket链接
                    ws_hdl=new WebSocket(ws_url);
                    ws_hdl.onopen=ws_onopen;//连接上时回调
                    ws_hdl.onclose = ws_onclose;//断开连接时回调
                    ws_hdl.onerror = ws_onerror;//连接出错
                    ws_hdl.onmessage = ws_onmessage;//收到服务端消息
                },
                error: function(xhr) {
                    alert(JSON.stringify(xhr));
                    location.replace("/login.html");//重定向到登录页面
                }
            })
        }
        function ws_onopen() {
            console.log("websocket onopen");
        }
        function ws_onclose() {
            console.log("websocket onclose");
        }
        function ws_onerror() {
            console.log("websocket onerror");
        }
        function ws_onmessage(evt) {
            var rsp_json=JSON.parse(evt.data);
            if(rsp_json.result==false)
            {
                alert(evt.data);
                location.replace("/login.html");
                return;
            }

            if(rsp_json["optype"] == "hall_ready")
            {
                alert("游戏大厅连接建立成功！");
            }
            else if (rsp_json["optype"] == "match_success") 
            {
                //对战匹配成功
                alert("对战匹配成功，进入游戏房间！");
                location.replace("/game_room.html");
            }
            else if (rsp_json["optype"] == "match_start") 
            {
                console.log("玩家已经加入匹配队列");
                button_flag = "start";
                be.innerHTML = "匹配中....点击开始匹配按钮即可停止匹配!";
                return;
            }
            else if (rsp_json["optype"] == "match_stop")
            {
                console.log("玩家已经移除匹配队列");
                button_flag = "stop";
                be.innerHTML = "开始匹配";
                return;
            }
            else 
            {
                alert(evt.data);
                location.replace("/login.html");
                return;
            }

        }
        get_user_info();
    </script>
</body>
</html>